| 橡胶无氧二段硫化工艺的研究 |
| Study on Oxygen-free Past Vulcanization of Rubber |
| 投稿时间：2018-04-13 修订日期：2018-04-13 |
| DOI：10.12136/j.issn.1000-890X.2019.07.0537 |
| 中文关键词: 无氧二段硫化 有氧二段硫化 丁腈橡胶 三元乙丙橡胶 质量损失 物理性能 |
| 英文关键词: oxygen-free past vulcanization oxygen past vulcanization NBR EPDM mass loss physical property |
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| 中文摘要: |
| 对采用硫黄硫化体系和过氧化物硫化体系的丁腈橡胶（NBR）和三元乙丙橡胶（EPDM）进行无氧和有氧二段硫化，并对硫化胶的物理性能进行对比。结果表明：在适当温度与时间下进行二段硫化可以在一定程度上改善硫化胶的物理性能，NBR比EPDM硫化胶、硫黄硫化体系比过氧化物硫化体系硫化胶的改善效果更为显著；无氧和有氧二段硫化的硫化胶物理性能差异不大；氮气对流模具法二段硫化的硫化胶质量损失主要源于增塑剂挥发，这在一定程度上影响了硫化胶的物理性能。 |
| 英文摘要: |
| Nitrile butadiene rubber（NBR） and ethylene-propylene-diene rubber（EPDM）with sulfur curing system and peroxide curing system were vulcanized by past vulcanization with or without oxygen，and the physical properties of vulcanizates were compared.The results showed that，past vulcanization at appropriate temperature and time could improve the physical properties of vulcanizates to a certain extent，and NBR vulcanizate was more effective than EPDM vulcanizate，as well as sulfur curing system vulcanizate than peroxide curing system vulcanizate.There was no significant difference in physical properties of vulcanizates curing by past vulcanization with or without oxygen.The mass loss of vulcanizate curing by past vulcanization using nitrogen convection mold method was mainly due to the volatilization of plasticizer，which affected the physical properties of vulcanizates to a certain extent. |
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